A recognition unit recognizes a specific sign in a captured image acquired by an image acquisition unit. A first notification processing unit displays a specific captured image as a captured image showing the specific sign on a display device in a vehicle. A second notification processing unit provides a notification in a notification mode different from the display of the specific captured image. The recognition unit recognizes a start sign that is a sign indicating the start of an automatic driving permitted zone as a zone where running in an automatic driving mode is permitted, as the specific sign, in the captured image. When the recognition unit recognizes the start sign, the first notification processing unit displays on the display device a start captured image that is the captured image showing the start sign as the specific captured image. When the recognition unit recognizes the start sign, the second notification processing unit notifies the start of the automatic driving permitted zone in a notification mode different from the display of the start captured image.